Car-truck.



H. H. HEWHT.

CAR TRUCK.

APPLICA'UOH ULEB MINE 2. 19H 1 .uwnted Mar. 19, 19.1.8

SHE?? I.

H. H. HEWITT.

CAR TRUCK. APPLlcATloN FILED JUNE 2.1914.

Patented Mar. 19, 1918.

2 SHEETS-SHEET 2.

.HERBERT H. HEWITT, OF BUFFALO, NW YORK.

CAR-TRUCK.

Specication of Letters Patent.

Patented Mar. 19, 191s.

application ined June 2, 1914. serial no. 542,377.

To all whom t may concern.'

Be it known that I, HERBERT H. HEWITT, a citizen of the United States,and a resident of Buffalo, county of Erie, and State of New York, hateinvented certain new and useful improvements in Car-Trucks, of which thefollowing is a full, clear, and exact description.

The present invention relates to railway car trucks and seeks tosimplify and improve the construction of the truck and to provideimproved means for equalizing the load on the axles of the truck and foryieldingly supporting the truck frame from lthe axles. A further objectof the invention is to provide improved means for permitting independentaxial movement of the wheel axles relatively to the truck frame. Certainfeatures of the invention are particularly applicable to a truck havingthree or more wheel axles, and a further object vof the invention is toprovide an improved frame for six-wheel car trucks. A

The invention consists in the features of improvement hereinafter setforth', illustrated in the accompanying drawings and more particularlypointed ont in the append ed claims.

Figure 1 is a. partial plan view of the improved truck with' portions ofone of the side frames shown in horizontal section. Fig. 2 is anelevation with parts of the side frame shown in vertical section. Fig. 3is a cross section of the improved truck, and Fig. 4 is a detail view ofthe truck transoms and spider.

The drawings illustrate a six-wheel truck to which certain features ofthe invention are particularly applicable, one of the objects of theinvention being to provide afsixwheel truck of simplified constructionand..Vv

which can b e constructed with a lshort wheel base if desired.' v

The side frames .are preferably made somewhat in the form of' boxgirders and can be conveniently made of cast steel. Each Side framecomprises inner and outer side walls 10 which arc provided with centraland end pedestal openings or jaws 11 for receiving the journal boxes ofthe wheel axles. At the opposite side edges ot the pedestal openings orjaws 11, the side walls of each side frame are connected by integralIvertical walls 12 which are spaced from'the edges of the openings sothat the latter are provided with suitable guide-ways 13. The

are preferably cylindrical. The side frames are preferably connected bytwo transorns 18 having cnd portions adapted to extend withinthcopenings 17 of the side frames. Preferably, the transoms 18 areprovided with somewhat reduced, cylindrical, jonrnal ends 19 whichextend within the cylindrical bearing` openings 17 of the side frames.Preferably, also, as shown, the transoms are formed of hollow steelcastings and are provided with tianges 520 which, as most clearly shownin Fig. 1, abut against the inner faces of the side frame.

The side frames are detachably connected to the ends of the transomspreferably by keys 21 which are arranged transverse to the axes of thetransoms. In the 'form shown, t-he walls of the bearing openings 17 andthe cylindrical ends 19 of the transoms are provided with suitablepockets 2:2 and 23 for receiving the securing keys 21, the latter heiligheld in place by bolts 24 extending through the portions 16 of the sideframes and through openings formed in the keys 21. The openings 23 inthe walls ofthe cylindrical ends 19 of the transcms are slightly longerthan the width of the locking keys Q1. so that exible connections areprovided be tween the side frames and the ends of the transoms. By theimproved construction described, the side frames are securely butdetachably connected to the transoms, and the constructionserves to holdthe parts of the truck frames at all times in proper,

when the truck is running over an uneven track.

The wheel axles 25 are provided, as usual.l with wheels 26 andprojecting journals 27 journal boxes 23.

arranged Nithin suit'ul'rlo ioruierl ol' irulepeodemt rocking mmerrmotof the licei axles; iu rransavuree vertical planes,

`For (chie hormis@y euch iouriiul hun' ie mow ably coimeciierl lo 51mlsuppgrrlig; :i volw l() or im'erierl U-elmpe, .rhirfl; is; :irl-migre@lo eliifi y perlrslel vertically iii. guiilwumys l2? of ille l .le yoke@:are el. iiwcrlerl lla-1 Jaws.

slated, and ure prelierulily hmmm if Sigel The lower om ol lille memlaoure commerical, by o hoh: Ill iu proper ,Crowell r f :virion Sleevelwimriu between The yo .i

. "l w 1 zu i lhe gouwe these Supports ar.- pre1 open links hmm#eenricil'mlzrr erulilj' io the Forni of ripper l 'l'.

Y 1C; i and lower er de. I ue lower @mls of extend around thecylindrical elemV curl Ythe upper eiirls of The linke exiizeuii overlet'- erolly progecmg infuori-sons 3% inter eliy formed upon the sich?,wax/.lis of the jow boxes 28. ln this way, zoe lmnger links; tain theyolres 3l) :md :u: lhc Same lime, ne Wheel axles are free 'lo elf-ifi,in en axial flireeiio'n inciepemlen v of one another and ei' Jthe sideframes im" iu o (iireoiiou Substantially at righi angles to the ,siremos.y 'the links being arrungel lo swing in planes parallel to theaxles nml eulisnhtialljy' et rigl'll. angles o ihe eide i' :rimes of thetruclr.

Suitable Spring eupporiug'zj means iuierposefl behremi the yolws; 3l?emi the sifle frames for yielrliugfly ,:xrryiuggj the latter, Thesupporting meme ie also arranged to equalize the lozul on lhe axles ofthe truck. ln ilccorolarnoewilli the prcifrrccl embodimentof theiin-'enigioiiE each side 'lil-mme, in the six-wheel truck ehowu7 ismist-:lined by f1 parir of springs 35 which exif-mllongitudinally-between the yolres 3U, ille Springs hef ing 'arrangedWithin jhe upper portion of the chamhored siile frames between lle sidewalls 10 thereof. Euch spring; 35:3 connu v :ai Set of leeres 'heldlogre-,ther by n. .epi-'ing lnmcl Erich spring; lmml ieinouiited ou usuirehle senil. 37 'formed upon the integral portion li of the .eirleimmo, uml :i yoke or stirrup 38 exlcurliug over ille spring hund islille. load properly upon the wheel the yolofs 30j which in "turn :ircsupporled from Ilm wheel axles :incl thc side irumes oi" the truck ureSuspended from the springs by menus olf the stil-ropes 3&5. The Springeare what muy be termed len-1"" Springe nucl :rre provider] 'withrelatively long` 11ml Short, orme. lh Jflic Six-wheel lruek shown, theimmer arms; of the siiriugs; :ire lwiee ne longJ the outer arms, so hatthe loml ou ilwr three wheel axles of the truck is; equsrlizml Thelougilmliimlljv exeniliug' lever springs, olwinlc ille uccessily oleemploying [he usual equalizer liars und (goil springs roouutcrl thereon.Furlliern'iore, flic :Ipiiilicnilts lever springe, cach malle up o'l asci of leaves., @voids the necesilfy of employing two sels oi Hpriiigi:is iu lh@ ordinary equalizer lrufnli ly olii/intimi ille ordinariy(foil spring user! in equalizer lruclif; lilic mouiller of pnriereduced, the ruclc iff, of such cousrrucion that it muy he formell 'with:i ehori wheel lrfiHi" a'ml "for hnl Temario is well iirlziplcrl .for215e under tendere :mal` ill' the mmc time. the `ori,i jerky morculoul;of ihc cqrmlixcr springe of the ')rcrlirirary truck is olniatccl nucl ameasier riding truck is provided. The esgueiizing Springe also serve todierrihue mile.

inasmuch as the wheel axles are free o shift imlcpeurleutly in axialdirection, i'he tr'iisverscly swinging spring 'plank oli he orcflinaryequalizer iruck can he omitted aud The ear con loe supported directlyirom the lraoeeree connecting menue or rraueolus ln tween the truck sideframes,

In the construction Shown, the spicler lill; having si. central bearing4l :mil rai: ,fl siclff bearings 112, is mounted directly on tl e trucktruusoms 1S, As shown, theV spider is provided will; projecting arms431the chili; of which are bolted so the lrnusuuge und which are alsopreferably profidcrl with depending flanges 44 for engaging ihe edges olthe iirnrisorrls. Preicrzilily, as f'l1o'w11, the Spider 4&0, includingihe center Deering il? side hearings 42 and arms 43, are formecl of nsingle integral casting.

ln ille ordinary equalizer truck, the laerol ihrusts or bolts on l'hetruck Wheels are imparted to thcruck frame and are taken up by theswinging truck holsters. ln the present improved construction, the smalland ordinary six-wheel truck, it has been found necessary to use shortjournal boxes for the bearings of the center axle in order to preventbinding between the bearings and the shoulders atV the ends of the axlejournals when the truck is on a curve. With the present construction,the wheel axles can readily adjust themselves relatively to one anotherwhen the truck is on a curve and full size bearings may be employedwithout danger that there will be any binding between the ends of thebearings and the shoulders of the axle journals.

It is obvious that many changes may be made in the details set forthwithout departure from the essentials of the. invention as delined inthe claims. While the invention is particularly applicable to car truckshaving three or more wheel axles, it is obvious thatl certain of thefeatures thereof may be employed in connection with fourwheel trucks. Itshould also be noted that parts of the invention may be taken withoutits adoption in its entiret I claim as my invention 1. A car truckcomprising truck side frames having pedestal jaws and transom openingsbetween said jaws, a truck transom having end portions engaging saidopenings and connected to said side frames, wheel axles, journal boxestherefor arranged within' said pedestal jaws, and equalizer springlevers extending longitudinally between said journal boxes and over theends of said transom, said spring levers being supported at their endsby said journal boxes and being connected intermediate their ends tosaid side frames.

, 2. In a six wheel, bogie truck, the combination with truck sideframes, transverse car supporting means extending between and connectingsaid side frames and provided with acenter bearing, wheel axles, journalboxestherefor, and pairs of lever springs for k.carrying said sideframes extending longitudin\allv between said journal boxes andSupported thereby, said lever springs hav ing arms of diHerent-lengthsto equalize the load upon the outer and intermediate wheel axles.

3, In a six-wheel truck, the combination with thetruck frame, wheelaxles, journal springs extending and supported at their ends thereby,said springs being connected intermediate their ends to said truck frameand having relatively long and short, inner and outer arms to equalizethe load on said wheel axles.

4. A truck having six or more wheels and comprising connected sideframes having pedestal jaws, wheel axles, journal boxes therefor'arranged in said jaws, and two or more leaf' springs for carrying eachside frame ext-ending longitudinally between said journal boxes andsupported thereby, said springs havin relativel long and short arms forequazing the oadon said wheel axles.

5, A six wheel bogic truck comprising side frames having pedestal jaws,trans verse car supporting means extending between said side frames andprovided with a center bearing, wheel axles, journal boxes thereforarranged in said jaws, a pair of cqualizing springs for carrying eachside frame, each of said springs extending continuously andlongitudinally between two of said journal boxes and being supported attheir ends thereby, said side frames being chambered to receive saidsprings, and yokes pivotally connected to said side frames and extendingover said springs intermediate the ends of said springs.

6. A car truck comprising a truck frame having pedestal jaws, yokesguided in said jaws, wheel axles, journal boxes therefor movablyconnected to and supporting said yokes, and frame supporting equalizerspringsAl extending longitudinally between said yokes.

7. A car truck comprising a truck frame having pedestal jaws, yokesguided in said jaws, wheel axles, journal boxes therefor, supportinglinks pivoted to said journal box and to said yokes to permit theindependent axial movement of said wheel axles, and

frame supporting springs extending longitudinally between said yokes.

8. A six-wheel car truck comprising connected side frames havingpedestal jaws, yokes guided in said jaws, wheel axles, j ournal boxestherefor movably mounted in and supporting said yo'lres in mannerpermitting the independent, axialmovement of said wheel axles, andlongitudinally extending, equalizer lever springs connected to'sa'idside frames and having relatively long and short,

,inner and outer arms mounted on said yokes.

9, A six wheel truck comprising rigid side frames having pedestal jaws,two transoms Connecting said side frames, a supporting spider mounted onsaid transoms, yokes v guided in said jaws, wheel axles, journal boxestherefor, supporting. links for said yokes pivotally connected theretoand to said journal boxes to permit theV independent axial andtransverse rocking movement of said wheel axles, and pairs of equalizinglever springs connected to said side frames and,having relatively longand short, inner and outer arms mounted on said yokes.

10. A bogie Car truck comprising side frames, transverse car supportingmeans connecting said side frames and held against lateral movement withrespect thereto, said transverse car supporting means being providedwith a center bearing,'wl1eel axles, journal boxes for said wheel axles,carrying springs for said side frames,

spring suptransoms having cylindrical ends journaled within saidcylindrical openings of said side frames, said cylindrical opening andtransom end having pockets in the side walls thereof, and bolts in saidpockets for de? tachably connecting said side frames and transomsi 24. Asix-wheel vtruck comprising side frames having pedestal jaws andopenings 4 dependent endwise and rocking movements of said wheel axles,and pairs of longitudi nally extending, cqualizing lever springsconnected to said side frames and having relatively long and short innerand outer arms supported on said yokes.

25. A car truck, comprising truck side frames having pedestal jaws,transom openings between saidjaws and spring seats above said transomopenings, a truck tran soin having its end portions arranged within saidopenings and connected to said side frames, wheel axles, journal boxestherefor arranged within said pedestal jaws, equalizer spring leversresting on said spring seats extending longitudinally between saidjournal boxes and supported at their ends thereby, and yokes forconnecting said springs intermediate their ends to said seats.

26. I-n a car truck, the combination of ohambered side frames eachcomprising connected inner and outer side walls and having pedestal jawsand intermediate transom openings, a truck transom having its endportions arranged within said openings and connected to said sideframes, wheel axles, journal boxes therefor arranged within saidpedestal jaws, and equalizing supporting means, including frame carryingsprings interposed between said journal boxesand said side frames, saidequalizing supporting means being arranged'within the upper portions ofsaid ehambered side frames, each m nid side frames, including thepedestal jaws thereof, being formed of an integral castin 271%11 a cartruck, the combination of chambered side frames each eomprisin connectedinner and outer side walls an having pedestal jaws and intermediatetransom openings, a truck transom having its ends arranged within saidopenings and connected to said side frames, Wheel axles, journal.boxestherefor arranged within said pedestal jaws, and equalizing leversprings arranged within said chambered side frames above said transomopenings and extending longitudinally between said journal boxes, saidlever springs being supported at their ends by said journal boxes andbeing connected intermediate their ends to said side frames.

28. In a car truck, the combination of chamber-ed side frames eachcomprising connected inner and outer side walls and having pedestaljaws, intermediate transom openings and spring seats above saidopenings, wheel axles, journal boxes therefor arranged within saidpedestal jaws, equalizing lever springs arranged Within said ehamberedside frames and extending longitudinally between said journal boxes,said lever springs being supported at their ends by said journal boxesand engaging said spring seats intermediate their ends, and yokes forholding said springs in place upon said seats.

29. In a car truck, the combination of chambered side frames comprisingconnected inner and outer side walls having pedestal jaws and transomopenings intermediate said jaws, a truck transom having its endsarranged within said openings and connected to .said side frames, yokesguided in said pedestal jaws, supporting springs arranged Yithin saidchambered side frames -and carried by said yolres, wheel axles, jour nalboxes therefore arranged Within said yolres, and transversely swinginghangers interposed between said journal boxes and said yokes.

HERBERT rl. HEWITT.

Witnesses:

J. G. ANDERSON, J. H. Pinnen.

